 /*******************************************************************************
  * Copyright (c) 2004, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui;

 /**
  * Extension interface to <code>IPerspectiveListener</code> which
  * adds support for listening to perspective open and close events.
  * <p>
  * This interface may be implemented by clients.
  * </p>
  *
  * @see IPageService#addPerspectiveListener(IPerspectiveListener)
  * @see PerspectiveAdapter
  * @since 3.1
  */
 public interface IPerspectiveListener3 extends IPerspectiveListener2 {

     /**
      * Notifies this listener that a perspective in the given page has been
      * opened.
      *
      * @param page
      * the page containing the opened perspective
      * @param perspective
      * the perspective descriptor that was opened
      * @see IWorkbenchPage#setPerspective(IPerspectiveDescriptor)
      */
     public void perspectiveOpened(IWorkbenchPage page,
             IPerspectiveDescriptor perspective);

     /**
      * Notifies this listener that a perspective in the given page has been
      * closed.
      *
      * @param page
      * the page containing the closed perspective
      * @param perspective
      * the perspective descriptor that was closed
      * @see IWorkbenchPage#closePerspective(IPerspectiveDescriptor, boolean, boolean)
      * @see IWorkbenchPage#closeAllPerspectives(boolean, boolean)
      */
     public void perspectiveClosed(IWorkbenchPage page,
             IPerspectiveDescriptor perspective);

     /**
      * Notifies this listener that a perspective in the given page has been
      * deactivated.
      *
      * @param page
      * the page containing the deactivated perspective
      * @param perspective
      * the perspective descriptor that was deactivated
      * @see IWorkbenchPage#setPerspective(IPerspectiveDescriptor)
      */
     public void perspectiveDeactivated(IWorkbenchPage page,
             IPerspectiveDescriptor perspective);

     /**
      * Notifies this listener that a perspective in the given page has been
      * saved as a new perspective with a different perspective descriptor.
      *
      * @param page
      * the page containing the saved perspective
      * @param oldPerspective
      * the old perspective descriptor
      * @param newPerspective
      * the new perspective descriptor
      * @see IWorkbenchPage#savePerspectiveAs(IPerspectiveDescriptor)
      */
     public void perspectiveSavedAs(IWorkbenchPage page,
             IPerspectiveDescriptor oldPerspective,
             IPerspectiveDescriptor newPerspective);
 }

